Which of the following is a method of purifying water?

A. Adding iodine B. Fixation C. Freezing D. Aeration

A large truck is moving at 22.0 m/s. If its momentum is 125,000 kg •, what is the truck's mass?

What is tarzan's speed vf just before he reaches jane? express your answer in meters per second to two significant figures?

A ___ can only take place when the moon is in the new moon phase

Mass (kg) Force (N) 5 25 10 50 15 75 20 100 Consider the data collected in science class. Different masses were thrown with varied amounts of force. The data table reflects Newton's 2nd Law of Motion, or F = ma.

The vapor pressure of ethanol at 25 degrees C is 7.83 kPa. Calculate the vapor pressure in atm. Round answer to 3 significant digits.

Mass m1 is has an initial velocity v1i. Mass m1 collides with a stationary mass m2. The net external force on the two particle system is zero. If the two masses stick together after the collision, then the final speed vf of the two masses is:

What can one say for sure about element #99, Einsteinium (Es)) ? a) There's no such element! b) It is an alkali metal. c) It is radioactive. d) It has 253 neutrons. e) It increases one's 1. Q. slightly when swallowed.

What is the pH of neutral substance?

The velocity of a wave depends only upon the ... ?

When studying atoms, scientists can ignore the blank force between charged particles that make up the atoms because it is many millions of times smaller than other forces in the atom